<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
</head>
<body>
<form action="/updateUser" method="post">
    id:<input type="text" name="id" value="${user.id}" readonly />
    name:<input type="text" name="name" value="${user.name}" />

    age:<input type="text" name="age" value="${user.age}" />
    <input type="submit" value="submit" />
</form>
</body>
</html>